Meter-testing service cut-out.



, Y T. E. MURRAY.

METER TESTING SERVICE OUT-OUT.

APPLIOATION FILED nno. a, 1909.

.-f1;031,'363. Patented 2, 1912.

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T. E. MURRAY.

M TESTING SERVICE OUT-OUT.

P IoATIoN FILED Dma. 1909.4

l1,031,333. 3 Patented 2,1912.

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1. y /72 vcnor T. 'B. MURRAY. METER `TESTING SERVICE OUT-QUT. APPLIoATIoN FILED Drzoxa, 1909.

1,031,363. Patented July 2.,' 1912.

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METER TESTING SERVICE GUT-OUT.

1,031,363. Patented July 2, 1912.

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T. E. MURRAY.

METER TESTING SERVICE OUT-OUT.

APPLIUATION FILED 1520.3, 190s.

Patented July 2, 1912.

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THOMAS E. Moment?, or .NEW roam N. Y.

METER-TESTING sEnvrcE CUT-our.

, y Specification of Letters Patent.

Application led December 8, 1909. Serial No. 532,050;I

To all whom t may concern Be it known that I, THOMAS E. MURRAY, a citizen of the United States, residing at New York, in the county' of New York and State of New York, have invented a certain new and useful Improvement in Meter-Test-v ing Service Cut-Outs, of which the following is a speciiication.`

The invention is a meter testing` service cut-out, for electrical installations, receiving currentover a three wire supply system. It has for its object to simplify the testing of consumersmeters while in service. To this end I combine certain removable gang plugs with terminals arranged directly -on the cut-out support in such a way, as that by simply applyiul said plugs to contacts on said terminals, am enabled to establish or cut oil' service, to remove the meter, or to test the meter with artificial load; the meter removal and testing being, in each case, accomplished without interruption of the customers service.

- the line 2, 2, of Fig. 1.

In the accompanying drawings-Figure 1 is a plan view of my meter testing service cut-out, with the fuse cases and removable gang plugs removed. l Fi 2 is a section on ig. 3 is a section on line 3, 3, of Fig. 1, showing a fuse case' in place. Figs. 4, 5 and 6 are horizontal sections of the rojection respectively on the lines 4, 4, of ig. 7; 5, 5, of Fig. 8 and 6, 6 of Fig. 9. Fi 7 is a section on the line 7, 7,; of F1 4. Fig. 8 is a section on the line 8, 8, of Fig. 5, and Fig. 9 is a section on the line 9, 9, of Fig. 6. Fig. 10 is a section on the'line 10, 10, ofFig. 6. Flg. 11 1s a perspective view of the gang plug V, and

` Figs. 12 and 13 are elevations of the gang lugs U. and T. Fi 14, 15 and 16 are 'agrams, 14 ustrating the service connections, ig. 15 the testin of the mear with artificio oad, and ig. 1c, the removal 'of the meter withoutinterrupting customers service.

Similar numbers and letters of referen indicate like parts. .j 'A is the base block or support-preferablformed of insula refractory materiai, such as rcelain. said block are four sockets C, D, E, in each of which is se- 'cured a metal plate having its ends bent upwardly Itov form spring contact arms. The vpositive and negative main conductors 11, 2, entemtheblock through passages 13, 14.

in a wall thereof and are respectively connected to plates in the 'sockets C,y E. `The Patented July a, 1912.`

neutral conductor 15 enters the blockthrough a a Vmetal strlp 16 on the bottom of a recess formed in said block between the pairs of recesses B, C and D, E.- Fuse" lugs vone of which is shown at H, Fig. 3, a so oi porcelain or like material containin ing their terminals connected 1n the usual way to end contact plates I, t in the sockets B, C and D, E and establishielectrical -connection with the spring arms therein.

On the block A is a ro ection K in which are five recesses L, Bi), N, VO, P. In said recesses are metal strips ,-17, 18, 19, 20, 21, On 'the side of the support A is a projection Q, in which are three recesses which receive metal strips 22, 23, 24, to ,which are respec tively connected the local conductors 2,5, 26, 27 The neutral local conductor is connected by metal strips .28 (dotted lines Fig. 1) with the strip 16. The strip 17 in ,recess L connects by metal strip 29 with thev spring arms in recess B. The strip 18 in recess M is connected to a stri 18 which extends throu h a channel onl t e under side of support and hence below strip 29, and connects with local conductor 27. The strip 21 in recess P connects by metal strip 30 with the' spring arms in recess I).4 he strip 20 in recess O connects to a strip 2O which extends through a channel on the under side of the support A, and hence below stri each strip 17, 18, 20, 21v are 4two `parallel upwadly extending contact plates, namely,

assage 15* and is connected to 30, with local conductor'25. On

fuses hav- 31, 32 on strip 17 ;`33, 34 on strip 18; 35, 36

on strip 20,; 37, 38 on strip 21. The plates 31,33, 35 and 37 are in line across the pro;-

jection K, and the lates 32, 34, 36 and 38' strips 39, 40, 41, 42, on whichvare upwardly extending contact plates 43, 44, 46, 4 7. On

the strip 19 'in recess N is an upwardly extending contact' plate 45. The contact plates 43, 44, ,45, 46 and 47 are in line across the projection K. l ,I

Referring now to the diagram, Fig. 14, which shows the service connection, R re resents a meter of usual construction, to t e terminals of which the strlps 39, 40 41 42 and 19 are connected. To establish the connection I provide Ithe gang plug T, Fig. 13,

which comprises aholder 50- of wood, or like material, fromv which depend four. con- I nected pairs of contact plates 51, 52, 53,54.

4These pairs of plates are respectively inserted between the vertical contact plates 43, 44, 46, 47 on strips 39, 4 0, 41, 42, and the vertical contactv plates 31,-\33, 35, 37 on strips 17,18, 20, 21, as shown in Fig. 7, and in this way electrical connection is established, asshown in Fig. 14, to both the local installation represented at S and the meter R.

In Fig. 16 I illustrate how the meter'may be removed without interrupting the local service. To' this end I use a gang plug-U, i'

Figs. 8 and 12, which comprises a holder 60 of insulatin material, preferably formed of two paralle bars 61, 62, between which are clamped four pairs of contact plates 63, 64, 65, 66. The plates 63, 64 are connected by a bridge piece 67, and the plates 65, 66

by a bridge. piece 68. The gang plug T being in place, as already described, thegang plug U is applied tothe vertical contact plates 32, 34, 36, 38, as shown in Figs; '5'

and 8, thus bridging plates 32, 34 and 36, 38. When this'is donethe gang pl-uglT is removed and then, as is obvious from Fig. 16, the meter may be disconnected without 30 interrupting the service circuit.

In Fig. 15 I illustrate how the meter may `be tested with artiicial load. To this end,

, in addition to the gang plug U, I use another gan l V, shown 1n Fig. 1l. This comprigesp alg holder 70 of insulating material, rom ,which depend three pairsof contact plates 71, *73, 75 on which are binding posts as shown. Between the airs of plates 71 and 73, and also .between tke pairs of plates 73, 75, are secured pairs of contact plates 72, 74, and these are connected by' an outwardly bent bridge,pi'ece 79. The artii cial load represented at W, Fig. 15, is

connected to the terminals, 71 and 73 on the holder. In making the test, the gang plugs T and U being both in place, as above demay scribed, the gang plug T is. first removed. The gang plugU is then applied'to the vertical contact plates 43, 44, 45, 46, '47, as shown in Figs. 9 and 10. The upwardly bent end 80 of one member of the pair of plates 75 on gang plug V enters between the vertical contact plates 37 and 47 and establishes electrical connection between them. The resulting circuit connections become as shown in Fig. 15, from which it will be ob- -v1ous that the meter -test with-artificial load be made 'withoutinterruption of the service circuit.

I claim:

1. A meter -ltesting service' cut-out, comprising a base, service, load and meter circuit terminals thereon, a meter, a gang 'pluglcoperating with the load and service termlnalsfor establishingvdirect circuit from ing device in said service circuit.A

service supply to load,an'd means for cutting the meter completely out of said circuit.

2. A meter testing service cut-dut, comprising a base, service, load and meter `circuit terminals thereon, a meter, a gang plug coperating with the load and service terminals for establishing direct circuit from service supply to load, and a, second gang plug coperating with the service, load and 4meter terminals forcutting the meter out of said circuit.

3. A meter testingfservice cut-out, com- I prising a base,service, load. and meter circuit "terminals thereon, a meter, means for cutting the meter completely out of circuit, means for establishing current supply directly toload, a gang plug, anda metertesting device connected to said plug: the said plug coperating with said meter and service terminals to connect said meter and test- 4. A meter testing service cut-out, comprising'a base, service, load and meter cir'- cuitterminals, and connections on said base, a meter, and a gang plug coperating withl lsaid meter terminals and said service and load terminals Tor simultaneously opening gaps in said connections between vsaid meter terminals and said service and load terminals and thereby mechanically disconnecting said meter terminals from said service and load terminals.

5. A meter testing service cut-out, comprising a base, service, load and meter circuit terminals, and connections on said base,

'a meter,` means for opening gaps in said a connections between said meter .terminals and said service and load terminals, and thereby mechanically disconnecting said meter terminals from said service and loa terminals, and means coperating with said service and load terminals for establishing direct circuit from service tp load. 6. A meter testing service cut-out, comprising a base, service, loadand meter circuit terminals, and connections on said base, a meter, a gang plug coperating with-said meter terminals for simultaneously o ening a meter, means for opening gaps in said connections -between said meter terminals and said serviceand load terminals, means cooperating with said service and load terminals for .establishing direct circuit from service` to load, a gang plug bridging saidgaps and coperating with said service terminals, and a meter testing device normally connected to said plug: the said plug connecting said meter and testing devlce 1n circuit.

8. -The combination of an electric cut-outI 4on said support connected to the remaining meter termlnals, and respectively disposed opposite to the aforesaid positive and negative terminals 17, 18, 20, 21, and a removable gang plug T constructed to close circuit between said positive and negative terminals 17, 18, 20, 2l .and the'ifour terminals 39, 40, 41, 42.

9. The combination of an electric cut-out support, the conductors of a three wire system entering the same, a meter, two separated circuit terminals 17 18 on said support interposed in the positive conductor,

' two separated terminals 20, 21 on said support interposed in the negativel conductor, and a removable 'gang plug U having two pairs 63, 64 and 65, 66 o clip arms, the arms of each pair being electrically connected and constructed respectively to close circuit between the members of each pair of separated terminals. y

10. The combination of anelectric cut-out support, the conductors of a' three wire system entering the same, a meter, two sepa-v rated circuit terminals 17 18 on said support interposed in the positive conductor, two separated terminals 20, 21 on said support interposed in the negative conductor, a

terminal 19 on said' support connected to the neutral conductor and to one terminal of the meter, and four terminals y39, 40, 41, 42 on said support connected to the remaining meter terminals, and respectively disposed opposite to the aforesaid positive and negative terminals 17 18, 20, 21, a removable gang plug U having pairs of clip arms 63, 64 and 65, 66, the arms of each pair being electrically connected and constructed respectively to close circuit between the memlbers of eachpair 17, 18 and.v 20, 21 of said terminals, a second removable gang plug V havingclip arms 71, 72, 73, 74, 75 construct-- ed to engage with terminals 39, 40, 19, 4l, 42 and .electrically connecting terminals 40, 41 and'42, 21, an artificial load, and means on said gang plug V for connecting said load to arms 73 and 75.

ln testimony whereof I have aixed my signature in presence of two witnesses.

THOMAS E. MURRAY. Witnesses:

GERTnUDE T. PORTER, MAY T. MCGARRY.

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